If you convert CHD → bin/cue and play on ePSXe:
for /r %%i in (*.cue) do chdman createcd -i "%%i" -o "%%~ni.chd" Use code with caution. Copied to clipboard
Since ePSXe cannot read CHD, we will convert them back to the standard .bin/.cue format. You will need a tool called (part of the MAME tools).
Before diving into ePSXe specifically, you must understand the format.